Reese Witherspoonmay have one of the most famous faces in the world, but she tells MTV News she’s in awe of Robert Pattinsonand Kristen Stewart‘s stardom. “I’ve never experienced what he has — going to premieres, and there’s just millions of people waiting for him to touch them,” she says. “I think it must be strange, but I don’t even know how to process what he deals with and what Kristen deals with.”

But don’t think for a second that Reese questions whether Rob deserves his popularity.

“I would say [he’s] the hardest-working person I’ve ever worked with,” she admits. “Honestly. [He’s] professional, hard-working, so appreciative, more grateful than I’ve ever seen anyone for where he is in life.”

We love hearing Rob’s co-stars speak so highly about him, and to have those words come someone like Reese — who we already love — means even more!